Oliver Wainwright: It’s got a cinema, a marble disco, an infinity pool with waterslide, a bedroom the size of two tennis courts – and tables upholstered in stingray skin. Got £260m? Then the penthouse in Monaco’s new Odeon Tower could be for you

The French director's biopic of Grace Kelly, starring Nicole Kidman, was savaged by the critics when it opened Cannes this year. But will the man who took on Harvey Weinstein care? Andrew Pulver went to find out